Spyder3 SG-34 GigE Vision Color Manual
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Teledyne DALSA
03-032-20124-00
Color
Also n ote: By d efau lt, the u ser settings are set to the factory settings.
Timing: Exposure and Synchronization
Im age exp osu res are initiated by an event. The trigger event is either the cam era's p rogram m able internal
clock u sed in free ru nning m od e, an external inp u t u sed for synchronizing exp osu res to external triggers,
or a p rogram m ed fu nction call m essage by the controlling com p u ter.
Trigger com m and s are available as m em bers of the Line Trigger set.
GigE Vision Input Controls
Line Trigger
Line Trigger Mod e
The state of the line trigger. If OFF, then the line trigger is
internally generated . If ON , then triggered by an external signal.
Line Trigger Sou rce
The external sou rce that cau ses a line trigger. The line trigger is
from the GPIO_PIN 0. This featu re is available only w hen Line
Trigger Mod e is set to ON .
Line Trigger Activation
Determ ines the typ e of signal (high or low ) that w ill cau se a line
trigger. Line Trigger Mod e m u st be ON .
External Line Trigger Frequ ency
Read s the external line trigger frequ ency. N OTE: The cam era
cannot d etect frequ ency less than 5 H z and w ill d isp lay 1 if it
cannot d etect a signal. This featu re is available w hen the Line
Trigger Mod e is set o ON and Sensor Direction Control is set to
External.
The three trigger m od es are d escribed here:
Free running (trigger disabled):
The cam era free-ru nning m od e has a p rogram m able internal tim er for
line rate and a p rogram m able exp osu re p eriod . Line rate is 0.1 fp s to the m axim u m su p p orted by the
sensor. Exp osu res range from the sensor m inim u m to a m axim u m also d ep end ent on the cu rren t line rate.
This alw ays u ses Synchronou s m od e w here exp osu re is aligned to the sensor horizontal line tim ing.
External trigger:
Exp osu res are controlled by an external trigger signal. External signals are isolated by an
op to-cou p ler inp u t w ith a tim e p rogram m able d ebou nce circu it. The follow ing section p rovid es
inform ation on external trigger tim ing.
Softw are trigger:
An exp osu re trigger is sent as a control com m and via the netw ork connection. Softw are
triggers can not be consid ered tim e accu rate d u e to netw ork latency and sequ ential com m and jitter. Bu t a
softw are trigger is m ore resp onsive than calling a single -line acqu isition (Snap com m and ) since the latter
m u st valid ate the acqu isition p aram eters and m od ify on -board bu ffer allocation if the bu ffer siz e has
changed since the last acqu isition.
